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Open Access
Article
Publication date: 1 June 2023

Julia Solnier, Roland Gahler and Simon Wood

Background/Objectives: Protein-based meal replacements (MR) with viscous soluble fibre are known aids for weight loss. This study aims to compare the effects of new whey and vegan…

Abstract

Purpose

Background/Objectives: Protein-based meal replacements (MR) with viscous soluble fibre are known aids for weight loss. This study aims to compare the effects of new whey and vegan MR containing different amounts of PGX (PolyGlycopleX) on weight loss over 12 weeks, along with a calorie-restricted diet.

Design/methodology/approach

Subjects/Methods: Sixty-eight healthy adults of both sexes (53 women; 15 men; average age 47.1 years; BMI 31 ± 7.1 kg/m2 and weight 85.05 ± 23.3 kg) were recruited. Participants consumed a whey or vegan MR twice/d (5–10 g/day PGX) with a low-energy diet (1,200 kcal/day), over 12 weeks. Weight, height, waist and hip circumference were recorded (four time periods).

Findings

Results: Forty-four participants completed the study. Results showed significant reductions in average body weight and at week 12, whey group was [−7.7 kg ± 0.9 (8.3%), p < 0.001] and vegan group was [−4.5 kg ± 0.8 (6.2%), p < 0.001)]. All participants (n = 44; BMI 27 to 33 kg/m2) achieved significant reductions in body measurements from baseline to week 12; p < 0.001. Conclusions: Supplementation of protein-based MR with PGX and a balanced, low-energy diet, appears to be an effective approach for short-term weight loss.

Research limitations/implications

As the authors were evaluating if the MR as a whole (i.e. with PGX) caused weight loss from baseline over the 12 weeks, no comparators, i.e. just the MR without PGX, were used. Formulation of these new MRs resulted in a whey product with 5 g PGX and a vegan product with 2.5 g PGX. Only 2.5 g PGX could be formulated with the vegan protein due to taste and viscosity limitations. Study participants were not randomized and no control groups (e.g. no MR or MR without PGX but with energy restricted diet) were used. Furthermore, it is not clear whether the sort of protein alone or the combination with a higher amount of PGX (whey with 5 g PGX/serving vs vegan with 2.5 g PGX/serving) has contributed to these significant greater weight-loss effects. This was something the authors were testing, i.e. could only 2.5 g PGX/serving have an effect on weight loss for a vegan MR. These limitations would be somethings to evaluate in a subsequent randomized controlled study. Hence, the results of this study may serve as a good starting point for further sophisticated randomized controlled trials that can demonstrate causality – which the authors acknowledge as one of the fundamental limitations of an observational study design. Participants tracked their calories but adherence and compliance were self-assessed and they were encouraged to keep their exercise routine consistent throughout the study. Hence, these are further limitations. No control group was used in this study to observe the effect of the dietary intervention and/or physical activity on weight loss alone. However, a goal of the authors was to keep this study as close to a real-life situation as possible, where people would not be doing any of these measurements, to see if with minimal supervision or intervention, people can still lose weight and alter their body composition. Furthermore, differences in gender and the corresponding weight loss effects in response to MR-protein-based treatments could be evaluated in follow-up studies.

Practical implications

This study indicates that the consumption of protein-based (animal, whey or plant, pea protein) MR incorporating the highly soluble viscous PGX is beneficial for weight loss when combined with a healthy-balanced, calorie-restricted diet. MRs at either 2.5 g or 5 g per serving (RealEasyTM with PGX) proved to be a highly effective as a short-term solution for weight loss. The observed results are encouraging, however, further long-term studies (i.e. randomized clinical trials RCT) are needed to confirm the clinical relevance. RCTs should focus on the individual effects of PGX and/or the different protein sources used in MRs, on weight loss and the maintenance of the reduced body weight, and should measure detailed blood parameters (lipid profiles, glucose etc.) as well as collect detailed exercise and food consumption diaries.

Originality/value

To the authors’ knowledge, this is the first study comparing a whey versus vegan, (as pea) protein-based MR that is supplemented with fibre PGX; thus, this work adds information to the already existing literature on fibre (such as PGX) and MRs regarding their combined weight loss effects. The purpose of this study was to observe if the novel protein-based (either whey or vegan versions) MR RealEasyTM with PGX at 2.5 or 5 g in addition to a calorie-restricted diet (total of 1,200 kcal/day) would aid in weight loss in individuals over a 12-weeks period. Adding increasing amounts of whey protein and soluble fibre can help reduce subsequent ad libitum energy intake which could help adherence to energy restricted diets, but whether similar effects are seen with vegan protein is unclear – this study does aim to address this.

Details

Nutrition & Food Science , vol. 54 no. 1
Type: Research Article
ISSN: 0034-6659

Keywords

Content available
Article
Publication date: 1 March 2006

226

Abstract

Details

Nutrition & Food Science, vol. 36 no. 2
Type: Research Article
ISSN: 0034-6659

Open Access
Article
Publication date: 8 July 2020

Emily P. Bouwman, Marleen C. Onwezen, Danny Taufik, David de Buisonjé and Amber Ronteltap

Self-efficacy has often been found to play a significant role in healthy dietary behaviours. However, self-efficacy interventions most often consist of intensive interventions…

3527

Abstract

Purpose

Self-efficacy has often been found to play a significant role in healthy dietary behaviours. However, self-efficacy interventions most often consist of intensive interventions. The authors aim to provide more insight into the effect of brief self-efficacy interventions on healthy dietary behaviours.

Design/methodology/approach

In the present article, two randomized controlled trials are described. In study 1, a brief self-efficacy intervention with multiple self-efficacy techniques integrated on a flyer is tested, and in study 2, an online brief self-efficacy intervention with a single self-efficacy technique is tested.

Findings

The results show that a brief self-efficacy intervention can directly increase vegetable intake and indirectly improve compliance to a diet plan to eat healthier.

Originality/value

These findings suggest that self-efficacy interventions do not always have to be intensive to change dietary behaviours and that brief self-efficacy interventions can also lead to more healthy dietary behaviours.

Details

British Food Journal, vol. 122 no. 11
Type: Research Article
ISSN: 0007-070X

Keywords

Open Access
Article
Publication date: 29 February 2024

Mehroosh Tak, Kirsty Blair and João Gabriel Oliveira Marques

High levels of child obesity alongside rising stunting and the absence of a coherent food policy have deemed UK’s food system to be broken. The National Food Strategy (NFS) was…

Abstract

Purpose

High levels of child obesity alongside rising stunting and the absence of a coherent food policy have deemed UK’s food system to be broken. The National Food Strategy (NFS) was debated intensely in media, with discussions on how and who should fix the food system.

Design/methodology/approach

Using a mixed methods approach, the authors conduct framing analysis on traditional media and sentiment analysis of twitter reactions to the NFS to identify frames used to shape food system policy interventions.

Findings

The study finds evidence that the media coverage of the NFS often utilised the tropes of “culture wars” shaping the debate of who is responsible to fix the food system – the government, the public or the industry. NFS recommendations were portrayed as issues of free choice to shift the debate away from government action correcting for market failure. In contrast, the industry was showcased as equipped to intervene on its own accord. Dietary recommendations made by the NFS were depicted as hurting the poor, painting a picture of helplessness and loss of control, while their voices were omitted and not represented in traditional media.

Social implications

British media’s alignment with free market economic thinking has implications for food systems reform, as it deters the government from acting and relies on the invisible hand of the market to fix the system. Media firms should move beyond tropes of culture wars to discuss interventions that reform the structural causes of the UK’s broken food systems.

Originality/value

As traditional media coverage struggles to capture the diversity of public perception; the authors supplement framing analysis with sentiment analysis of Twitter data. To the best of our knowledge, no such media (and social media) analysis of the NFS has been conducted. The paper is also original as it extends our understanding of how media alignment with free market economic thinking has implications for food systems reform, as it deters the government from acting and relies on the invisible hand of the market to fix the system.

Details

British Food Journal, vol. 126 no. 13
Type: Research Article
ISSN: 0007-070X

Keywords

Open Access
Article
Publication date: 27 September 2019

Siet J. Sijtsema, Ireen Raaijmakers, Marleen C. Onwezen and Esmee Doets

Generally, food intake of older consumers is not in line with dietary guidelines. Insight into personal health-related motive orientations (HRMO) in this target group is useful…

Abstract

Purpose

Generally, food intake of older consumers is not in line with dietary guidelines. Insight into personal health-related motive orientations (HRMO) in this target group is useful for developing tailored interventions that support healthy food consumption, a better understanding is needed. The purpose of this paper is twofold: first, to identify older consumer groups based on HRMO; and second, to compare their consumption of different food groups and functionalities associated with a main meal.

Design/methodology/approach

An online survey was filled out by 459 Dutch adults aged 55–90 years (mean age=68.2 years), of the Sento network including 800 vital community-dwelling older consumers.

Findings

Analysis revealed five clusters of older adults with different HRMO profiles: appearance and achievement oriented, active oriented, altruistic oriented, achievement oriented and less health oriented. In addition, these segments differ in importance of functionalities associated with a main meal, i.e., physical, pleasure or rewarding, and in the consumption of specific food groups, i.e., unprocessed meat, meat replacers and unsalted nuts.

Research limitations/implications

Recommendations for interventions and communication strategies to support healthy food consumption in the different HRMO segments are presented.

Originality/value

This exploration showed that different segments of Dutch older adults can be identified based on HRMO. Between these segments there are differences in consumption of protein-rich food groups and functionalities associated with a main meal.

Details

British Food Journal, vol. 122 no. 11
Type: Research Article
ISSN: 0007-070X

Keywords

Content available
Article
Publication date: 7 September 2023

Nilesh Kumar, Zubair Nawaz and Pavitra Samerguy

This study aims to investigate the impact of social media fitness influencers (SMFIs) on buyers’ purchase decisions by analyzing the factors that determine their influence…

1988

Abstract

Purpose

This study aims to investigate the impact of social media fitness influencers (SMFIs) on buyers’ purchase decisions by analyzing the factors that determine their influence. Furthermore, it aims to determine the relative influence of different genders of SMFIs on buyers’ decisions regarding supplement purchases.

Design/methodology/approach

The research consisted of two phases: a contextual study examining the characteristics of social media influencers and their impact on supplement purchase decisions and a comparative study comparing the influence of different genders of social media influencers. A survey was conducted online involving 426 Thai social media users who follow influencers to obtain the results for both phases.

Findings

The results revealed that information credibility and expertise were significant characteristics of SMFIs that had a significant impact on buyers’ purchase decisions. However, other characteristics such as the number of followers, content and attractiveness of SMFIs did not show any correlation with the buyers’ purchase decisions. Additionally, the study identified a positive influence of gender matching between SMFIs and respondents on purchase decisions.

Originality/value

This study emphasizes how the characteristics of social media influencers in Thailand influence buyers’ decisions to purchase dietary supplements.

Details

International Journal of Pharmaceutical and Healthcare Marketing, vol. 18 no. 1
Type: Research Article
ISSN: 1750-6123

Keywords

Open Access
Article
Publication date: 10 July 2023

Muneera Qassim Al-Mssallem, Sehad Nasser Alarifi and Nora Ibrahim Al-Mssallem

Blood lipid and lipoprotein abnormalities are common among patients with diabetes. The study aimed to assess dietary fat intake and its association with blood lipids among…

Abstract

Purpose

Blood lipid and lipoprotein abnormalities are common among patients with diabetes. The study aimed to assess dietary fat intake and its association with blood lipids among patients with Type 2 diabetes mellitus (T2DM) considering sex differences.

Design/methodology/approach

A cross-sectional observational study was conducted with patients (207 males and 197 females) with T2DM. The daily food intake and its contents of fat and fat types were assessed through face-to-face interview. Anthropometric measurements, glycated hemoglobin (HbA1c), triglyceride, total cholesterol (TC), high-density lipoprotein (HDL) cholesterol and low-density lipoprotein (LDL) cholesterol were initially recorded.

Findings

The results revealed that TC, LDL and HDL cholesterol levels were significantly higher in females than in males. However, the TC: HDL ratio was significantly higher in males than in females. The results also showed that the daily intake of saturated fatty acid (SFA) slightly exceeded the daily recommended allowance. However, the monounsaturated fatty acid + polyunsaturated fatty acid/SFA (MUFA + PUFA/SFA) ratio was within the recommended ratio. In addition, this study found that the main sources of SFA and cholesterol intake were milk and milk products. A significant association between high fat intake and HbA1c levels was observed (r = 0.234, p < 0.001).

Research limitations/implications

As it is a cross-sectional observational study, this study has the natural limitation where it can only demonstrate an association.

Originality/value

The types of dietary fat intake may contribute to blood lipid abnormalities and differences effects may exist among male and female. Studies on the effect of daily fat intake and its types on blood lipids in patients with diabetes, in particular Saudi patients with diabetes are limited. This study focused on the amount and type of the consumed fat among male and female Saudi patients with T2DM and studied the relationship between the type of consumed fat and blood lipid profiles.

Details

Arab Gulf Journal of Scientific Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1985-9899

Keywords

Content available
Article
Publication date: 1 December 2000

74

Abstract

Details

British Food Journal, vol. 102 no. 11
Type: Research Article
ISSN: 0007-070X

Content available
45

Abstract

Details

Nutrition & Food Science, vol. 38 no. 1
Type: Research Article
ISSN: 0034-6659

Open Access
Article
Publication date: 4 April 2022

Ewunetie Mekashaw Bayked, Birhanu Demeke Workneh and Mesfin Haile Kahissay

Background: Compliance of patients with self-care practices is the mainstay of measures to manage diabetes. This study explored self-care practices of type 2 diabetes patients…

Abstract

Background: Compliance of patients with self-care practices is the mainstay of measures to manage diabetes. This study explored self-care practices of type 2 diabetes patients receiving insulin treatment in North-East Ethiopia.

Methods: The study employed an interpretive phenomenological approach using purposive sampling. The data were collected from 24 (11 males and 13 females) participants (July 2019 to January 2020) using in-depth interviews till theoretical saturation. The data were analyzed thematically and organized using QDA Miner Lite v2.0.8.

Results: The findings were categorized into: labeling diabetes, self-care maintenance experiences, recognition of symptoms, and mitigating mechanisms. The self-care maintenance practice of patients was linked with diet input preferences and the effectiveness level of insulin. What guides the self-care behavior was the patients’ preferentiality of strictly adhering to their preferred dietary inputs. Barley and wheat were the most common preferential and non-preferential inputs, respectively. The patients strictly adhered to insulin treatment because they found it effective. The most common hyperglycemia symptoms to be managed by taking an additional dose of insulin, were frequent urination, increased thirst, and their consequence (dehydration). Excessive sweating (initial), shivering (middle), and falling (final), respectively in severity, were the most common symptoms of hypoglycemia which were perceived to be treated with sweet snacks.

Originality: To our knowledge, this is the first research in Ethiopia to investigate the self-care experiences of type 2 diabetes patients receiving insulin using an interpretive phenomenological approach.

Details

Emerald Open Research, vol. 1 no. 2
Type: Research Article
ISSN: 2631-3952

Keywords

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